#garfield Logs

Feb 06 2020

01:12 AM X704 is now known as tiwake
04:47 AM X704 is now known as tiwake
04:52 AM X704 is now known as tiwake
05:03 AM Tom_L: doing class again?
07:25 AM X704 is now known as tiwake
07:30 AM X704 is now known as tiwake
03:28 PM polprog: https://polprog.net/rozne1/ircjunk/pfl22/
03:28 PM polprog: this thing
03:28 PM polprog: is so beaten up.. needs swithc cleaning,
03:28 PM polprog: switch*
03:28 PM polprog: needs one of the driver ICs replaced
03:29 PM polprog: but its sortof alive
04:19 PM polprog: whats a correct charge target votlage for a 12v lead acid battery?
04:20 PM polprog: in other words, what should a charged 12v battery read
04:28 PM Tom_L: ~14
04:28 PM Tom_L: charge
04:28 PM Tom_L: approx
07:29 PM X704 is now known as tiwake
09:10 PM rue_shop2: 13.5
09:10 PM rue_shop2: exhausted
09:10 PM rue_shop2: stayed up tooo late last night
09:16 PM X704 is now known as tiwake
09:25 PM rue_shop2: oh hello
09:25 PM rue_shop2: got up counting working
09:32 PM rue_shop2: hey it goes down too!
09:40 PM rue_shop2: but reset doens't work
09:41 PM X704 is now known as tiwake
09:46 PM rue_shop2: hey hey
09:46 PM rue_shop2: got it
09:59 PM X704 is now known as tiwake
10:14 PM rue_shop2: Tom_L, I been doing this as one project, but commenting it out as I go
10:21 PM rue_shop2: oh its doing that stupid thing again
10:25 PM rue_shop2: yea, so I comment out code, tell it to recompile, and its fine
10:25 PM rue_shop2: then I can uncomment the code and its still fine
11:00 PM Tom_L: and you 'rebuild all' when you do it
11:01 PM Tom_L: err 'rerun all'
11:01 PM Tom_L: makes sure all the steps get rebuilt
11:05 PM rue_shop2: na, I always hit generate program file
11:05 PM rue_shop2: but next time I'll try that
11:05 PM rue_shop2: just redoing the johnston counter using fpga conventional
11:06 PM rue_shop2: the up/down counter is a mix
11:06 PM rue_shop2: there is a T flipflop, resettable via 'code'
11:06 PM rue_shop2: and the discrete logic glue of 4 of them
11:08 PM rue_shop2: I'm almost back to where I was
11:12 PM Tom_L: right click on 'generate program file' for that option
11:28 PM rue_shop2: hey hey, I have a new working johnston counter
11:29 PM Tom_L: what's Mr Johnson counting?
11:32 PM Tom_L: do you need samba to share windows folders on linux?
11:32 PM Tom_L: i don't remember doing that if you do
11:33 PM rue_shop2: you need samba to let windows access linux network shares
11:34 PM Tom_L: but not vise versa?
11:36 PM rue_shop2: oh, hmm
11:36 PM rue_shop2: yes and no, smbmount
11:36 PM rue_shop2: but you dont ahve to be running samba itself
11:36 PM rue_shop2: https://paste.debian.net/1129621/
11:37 PM rue_shop2: some of the modules needed for some of the tests are commented out cause it got stupid, but they will compile
11:38 PM Tom_L: alot of code
11:40 PM Tom_L: suttle differences from what you had i assume?
11:43 PM rue_shop2: its built and checked more carefully
11:43 PM rue_shop2: but see how I'm building tests?
11:45 PM Tom_L: yeah
11:45 PM rue_shop2: the idea is that it would all build up nicely
11:45 PM rue_shop2: but I had to take some right angles
11:46 PM rue_shop2: I'm working towards testing the carry on the counters
11:46 PM rue_shop2: if it works, I can start on the encoder thing
11:46 PM Tom_L: learning anything?
11:47 PM Tom_L: that's really what it's about after all....
11:47 PM rue_shop2: I'm learning that an fpga is not ideal for emulating logic that has feedbacks
11:48 PM rue_shop2: and that if you slip with a variable name, verilog will make up a value for you that defaults to 0
11:48 PM Tom_L: :)
11:49 PM Tom_L: i dunno if vhdl is any better but i think it's harder to follow
11:49 PM rue_shop2: I'd kinda like to do a bus with tristate things on it
11:49 PM Tom_L: i haven't tried that yet
11:50 PM rue_shop2: I cant think of a nice simple example yet
11:50 PM Tom_L: serial / parallel shift register?
11:50 PM Tom_L: i dunno
11:50 PM rue_shop2: not sure
11:52 PM rue_shop2: so far _?_:_ and if/else get me around everything
11:54 PM rue_shop2: sweeeeeeet, the carry works
11:55 PM Tom_L: yay
11:58 PM Tom_L: gnite